D-2 Glossary of Terms Glossary of Terms
D-8 PN: 10580-00318 Rev. P S412E UG
LTE : Long Term Evolution (LTE), sometimes also referred to as 3G LTE or
Super-3G, is the 3GPP radio technology evolution architecture. Its full
name is UTRA-UTRAN Long Term Evolution (LTE) and 3GPP System
Architecture Evolution (SAE). TE refers to a mobile technology upgrade
path for 3G networks that will provide faster data speeds and new
services through new radio access technology optimized for IP-based
traffic. E is part of the GSM evolutionary path beyond 3G, following
EDGE, UMTS/W-CDMA, and HSPA (HSDPA and HSUPA combined). L
uses Orthogonal Frequency Division Multiple Access (OFDMA) on the
downlink to achieve high peak data rates in high spectrum bandwidth.
LT systems will coexist with 3G systems as well as 2G systems. Mul
mode devices will likely function across LTE/3G or even LTE/3G/2G,
depending on market circumstances.
LVD : Low Voltage Directive (LVD)
NBFM : Narrow Band Frequency Modulation
NF : Noise Figure (NF) is a measure of degradation of the signal-to-noise
ratio (SNR) that is caused by components in a radio frequency (RF)
device. The noise factor (F) of a system is defined as the signal-to-noise
ratio of the input power of the system divided by the signal-to-noise
ratio of the output power of that system. F (the noise figure) is defined
as the decibel value of the noise factor. = 10log (F) where log uses the
base 10, or common log. T s formula is valid only then the input
termination is at standard noise temperature.
NXDN : A narrowband frequency-domain multiple access communication
protocol.
OBW : Occupied Bandwidth (OBW) is a measure of the bandwidth containing
99% of the total integrated power of the transmitted spectrum, centered
on the assigned channel frequency. Interference to other channels or to
other systems can occur if OBW is too large.
OSL : Open Short Load
OSL : Open Short Load Through
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